Prevent potential Explorer crash

ge0rdi · ge0rdi · commit 2130047bd628 · 2023-04-09T19:07:58.000+02:00
Fixes #1523
diff --git a/Src/ClassicExplorer/ExplorerBHO.cpp b/Src/ClassicExplorer/ExplorerBHO.cpp
@@ -64,6 +64,9 @@ LRESULT CALLBACK CExplorerBHO::SubclassTreeParentProc( HWND hWnd, UINT uMsg, WPA
 //   - change the tree styles to achieve different looks
 LRESULT CALLBACK CExplorerBHO::SubclassTreeProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData )
 {
+	if (GetTlsData()->bho == NULL)
+		return DefSubclassProc(hWnd, uMsg, wParam, lParam);
+
 	if (uMsg==TVM_ENSUREVISIBLE && (dwRefData&1))
 	{
 		// HACK! there is a bug in Win7 Explorer and when the selected folder is expanded for the first time it sends TVM_ENSUREVISIBLE for

Original file line number	Diff line number	Diff line change
`@@ -64,6 +64,9 @@ LRESULT CALLBACK CExplorerBHO::SubclassTreeParentProc( HWND hWnd, UINT uMsg, WPA`
`64`	`64`	`// - change the tree styles to achieve different looks`
`65`	`65`	`LRESULT CALLBACK CExplorerBHO::SubclassTreeProc( HWND hWnd, UINT uMsg, WPARAM wParam, LPARAM lParam, UINT_PTR uIdSubclass, DWORD_PTR dwRefData )`
`66`	`66`	`{`
	`67`	`+ if (GetTlsData()->bho == NULL)`
	`68`	`+ return DefSubclassProc(hWnd, uMsg, wParam, lParam);`
	`69`	`+`
`67`	`70`	`if (uMsg==TVM_ENSUREVISIBLE && (dwRefData&1))`
`68`	`71`	`{`
`69`	`72`	`// HACK! there is a bug in Win7 Explorer and when the selected folder is expanded for the first time it sends TVM_ENSUREVISIBLE for`